Somonauk Post Office

115 N Gage St, Somonauk, IL 60552

Contact Numbers

Phone: 815-498-2724
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours







Lobby Hours
PO Box Access Available

Monday 24 hours
Tuesday 24 hours
Wednesday 24 hours
Thursday 24 hours
Friday 24 hours
Saturday 24 hours
Sunday 24 hours

Last Collection Times

Monday 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 12:00pm
Sunday Closed

Bulk Mail Acceptance Hours

Monday 10:00am - 3:00pm
Tuesday 10:00am - 3:00pm
Wednesday 10:00am - 3:00pm
Thursday 10:00am - 3:00pm
Friday 10:00am - 3:00pm
Saturday Closed
Sunday Closed

  • Visit our Passport FAQ page for a complete overview of what to bring, what you need to know, and how long it will take.
  • You will need two forms of Identification with copies.
  • A passport quality photo. Photo service available at location.
  • The appropriate application form printed and filled out, and the required fee for applying or renewing.
  • You can find up to date costs, information, and forms at the State Departments Travel Site

  • Bulk Mail Acceptance
  • Bulk Mail Account Balance
  • Bulk Mail New Permit
  • Burial Flags
  • Business Line
  • Business Reply Mail Account Balance
  • Business Reply Mail New Permit
  • Duck Stamps
  • General Delivery
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Passport Acceptance
  • Passport Photo
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Lot Parking

Visit our Links Page for Holiday Schedule, Change of Address, Hold Mail/Stop Delivery, PO Box rentals and fees, and Available Jobs.

*Please call to verify information. Is anything incorrect? Let us know here

Nearby Post Offices:

Sandwich
22 N Eddy St
2.5 miles away

Sheridan
180 W Si Johnson Ave
4.2 miles away

Millington
200 N Grant St
4.3 miles away

Leland
130 N Main St
4.8 miles away

Reviews

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Just called because I have a package that was supposedly out for delivery to my house yesterday per tracking. Now the status states it cannot be delivered. I know I called after they closed, it was 5:11 pm, a lady answered, I apologized immediately for calling after they are closed but wanted to check on a package to catch it before they sent it back. The lady who answered abruptly stated sharply WE ARE CLOSED and hung up on me!! She could have said nicely they were closed and said goodbye. Or took down the info and would offer to check on it tomorrow. ?? WOW
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This post office likes to pick and choose, who they deliver to. The mail carriers are too lazy to get out of their vehicles and put packages in your mailbox, if it's out of reaching distance. Wrong mail delivered to wrong addresses constantly. Get it together Somonauk.
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I have had nothing but issues with this post office. When I call to ask questions, if I am unclear with my postal terminology I am talked down to like I'm an idiot. Letters that would normally take a week to get anywhere else take two. I love Somonauk, but the postal service definatly leaves something to be desired
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